Alzheimer’s disease is an irreversible, progressive brain-disorder that slowly destroys memory and thinking capability, and, eventually, the ability to carry out the simplest tasks. In most people with Alzheimer’s, symptoms first appear in their mid-60's. Estimates vary, but experts suggest that more than 5.5 million Americans, most of them age 65 or older, may have dementia caused by Alzheimer’s. Alzheimer’s is the most common cause of dementia among older adults.
